(PHP Extension) S3 Upload String using AWS Signature Version 2

Example to upload the contents of a string to the Amazon S3 service, using the older AWS Signature Version 2.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// Demonstrates how to use older AWS S3 Signature Version 2 for uploading the contents
// of a string variable to an object in a bucket.

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$rest = new CkRest();

// Connect to the Amazon AWS REST server.
$bTls = true;
$port = 443;
$bAutoReconnect = true;
// The file is uploaded to the bucket named "chilkat100", which becomes part of the domain:
$success = $rest->Connect('chilkat100.s3.amazonaws.com',$port,$bTls,$bAutoReconnect);

// ----------------------------------------------------------------------------
// Important: For buckets created in regions outside us-east-1,
// there are three important changes that need to be made.
// See Working with S3 Buckets in Non-us-east-1 Regions for the details.
// ----------------------------------------------------------------------------

// Provide AWS credentials for the REST call.
$authAws = new CkAuthAws();
$authAws->put_AccessKey('AWS_ACCESS_KEY');
$authAws->put_SecretKey('AWS_SECRET_KEY');
$authAws->put_ServiceName('s3');

// For AWS Signature Version 2, the following two properties need to be set:
$authAws->put_SignatureVersion(2);
// See http://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html#ConstructingTheCanonicalizedResourceElement
// The bucket is "chilkat100", and the uriPath is "/hamlet_play.xml", which must match
// the URI path passed to the FullRequestString method below.
$authAws->put_CanonicalizedResourceV2('/chilkat100/hamlet_play.xml');

$success = $rest->SetAuthAws($authAws);

// Load a text file into memory.
$fac = new CkFileAccess();
$fileContents = $fac->readEntireTextFile('qa_data/xml/hamlet.xml','utf-8');
if ($fac->get_LastMethodSuccess() != true) {
    print $fac->lastErrorText() . "\n";
    exit;
}

// To send the file in gzip or deflate compressed format, set the Content-Encoding request
// header to "gzip" or "deflate".  (this is optional)
$success = $rest->AddHeader('Content-Encoding','gzip');

// Indicate the Content-Type of our upload.  (This is optional)
$success = $rest->AddHeader('Content-Type','text/xml');

// We can add an "Expect: 100-continue" header so that if the request is rejected
// by the server immediately after receiving the request header, it can respond
// and the client (Chilkat) can avoid sending the file data.
// (this is optional)
$success = $rest->AddHeader('Expect','100-continue');

// Upload the file to Amazon S3.
$responseBodyStr = $rest->fullRequestString('PUT','/hamlet_play.xml',$fileContents);
if ($rest->get_LastMethodSuccess() != true) {
    print $rest->lastErrorText() . "\n";
    exit;
}

// Did we get a 200 response indicating success?
$statusCode = $rest->get_ResponseStatusCode();
if ($statusCode != 200) {
    print 'Error response: ' . $responseBodyStr . "\n";
    print 'Status code: ' . $statusCode . ', Status text: ' . $rest->responseStatusText() . "\n";
    exit;
}

print 'File successfully uploaded.' . "\n";

?>